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  • Containing the Flood of 1996

    One of the biggest floods the Portland District faced in the late 20th century occurred in February 1996 and caused millions of dollars in damage to the region. The District played a crucial role in combating this flood 's impact through a variety of short-term and long-term activities.
  • PUBLICATION NOTICE: Rapid Tidal Reconstruction for the Coastal Hazards System and StormSim Part I: Coastal Texas and Louisiana

    Abstract: incorporating a rapid tidal time series reconstruction and prediction subroutine within the Coastal Hazards System (CHS) framework. The CHS (https://chs.erdc.dren.mil) is a national database and web tool that provides probabilistic coastal hazard analysis (PCHA) products developed from regional studies such as the North Atlantic Coast Comprehensive Study (Nadal-Caraballo et al. 2015; Cialone et al. 2015). PCHA considers hazards due to both tropical and extratropical cyclones, depending on the storm climatology of the region of interest. The CHS supports feasibility studies, probabilistic design of coastal structures, flood risk management for coastal communities, and critical infrastructure. In the case of tropical cyclones (TCs) or hurricanes, both the timing of landfall and the level of the astronomical tide at the landfall location are critical in determining the magnitude of the still water level (i.e., storm surge + wave setup + astronomical tide). Therefore, a robust and accurate tide prediction methodology is needed to provide reliable reconstruction of tidal time series for historical, synthetic, and forecasted hurricane scenarios. This CHETN also discusses the quantification and validation of the Advanced Circulation (ADCIRC) tidal constituent database in the coastal Texas and Louisiana region as well as the implementation of the tidal reconstruction program Unified Tidal analysis (UTide) in the CHS framework.
  • PUBLICATION NOTICE: Analysis of Snow Water Equivalent Annual Maxima in the Upper Connecticut River Basin Using a Max-Stable Spatial Process Model

    Abstract: Recent advances from the science of spatial extremes and model regularization were applied to develop areal-based extremes of snow water equivalent (SWE) data for the upper Connecticut River Basin. Development of areal-based SWE exceedance probability estimates are of relevance for cool season probabilistic flood hazard analyses (PFHA). The approach profiled in this case study is applicable for other hydrometeor-ological variables of relevance to PFHA. The methodology conforms with Extreme Value Theory (EVT) for the analysis of spatial extremes; hence, there is a firm theoretical basis for extrapolation. Trend surface development is guided by EVT theory and recent advances for regularizing general linear models. R, a free software environment for statistical computing and graphics, and QGIS, a free and open-source geographic information system, were the primary tools used for product development and delivery. The following R software packages were primarily used during project execution: evd, Glmnet, maps, raster, rgdal, SDMTools, sp, and SpatialExtremes. R software packages exist in the public domain and support PFHA analyses of varying complexities. Their application herein is not an endorsement or recommendation. It is recommended that one would need to evaluate any particular R software package regarding its suitability for use for any specific application.
  • Army Corps’ Clark Fork River basin team completing work in Plains, Montana

    The Clark Fork River basin flood team from the Seattle District, U.S. Army Corps of Engineers, is providing scour protection at a levee in Plains, Montana, to protect the fairgrounds, businesses and infrastructure. Okanogan River basin flood team members completed work yesterday with Okanogan County at the Riverside levee and the Clark Fork team completed work on the Turah Levee in Missoula County, Montana. The Pend Oreille team is monitoring levees and providing technical assistance to local communities as the Pend Oreille River continues to rise.
  • Army Corps flood teams continue work in Okanogan and Pend Oreille counties

    Flood teams from the Seattle District, U.S. Army Corps of Engineers, will initiate work today on the Riverside North levee in Riverside, Washington, along the Okanogan River while work continues in Okanogan, Washington, in Clark Fork, Idaho, and Plains, Montana.
  • Army Corps flood fighters are working in Okanogan, Pend Oreille river basins

    Flood teams from the Seattle District, U.S. Army Corps of Engineers, will initiate work today in Oroville, Washington, and Clark Fork, Idaho, and continue work in Okanogan and Conconully, Washington, and Plains, Montana.
  • Lebanon partners with Corps to study flood risk management in Bartons Creek watershed

    LEBANON, Tenn. (Nov. 19, 2015) – The city of Lebanon and U.S. Army Corps of Engineers Nashville District held a signing ceremony today that signals the beginning of a Flood Risk Management Study of the Bartons Creek watershed. The study includes Bartons and Sinking Creeks and will look at measures to reduce flood risk as well as provide the city with new flood mapping for these streams.
  • Sacramento District sends help for Texas flood recovery

    The U.S. Army Corps of Engineers Sacramento District has flown three reservoir operations specialists to assist the Corp’s Southwestern Division with their round-the-clock response to recent flooding in Texas.
  • Corps of Engineers recognizes Flood Safety Awareness Week

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is promoting National Flood Safety Awareness Week, March 18-22, to improve public awareness and preparedness for flooding.
  • Coordinated dam releases key to reducing winter storm flood threat

    The weather and geography that make California’s Central Valley a world-class agricultural machine also fuels the potential for disastrous flooding – conditions constantly gauged by the water management section of the U.S. Army Corps of Engineers Sacramento District.